With the rapid growth of the electronics industry, the consumption of electronic-grade sulfuric acid has surged. The amount of produced waste sulfuric acid is 1.2-1.5 times greater than that of electronic-grade sulfuric acid. In this study, waste electronic-grade sulfuric acid was purified and synthesized to produce electroplating-grade high-purity copper sulfate. Specifically, the polysulfides in waste electronic-grade sulfuric acid were targeted converted through electrochemical methods, reducing their concentration from 4.848% to 0.284%. Subsequently, the treated waste electronic-grade sulfuric acid was utilized for the preparation of high-purity copper sulfate. And a comparative study was undertaken to evaluate two technical approaches: chemical synthesis and electrochemical preparation. The investigation revealed that both the copper oxide synthesis method and the electrochemical preparation method can produce high-purity sulfuric acid. However, the purity of copper sulfate achieved through electrochemical processes is notably higher. This method accomplishes the high-quality cascade utilization and recycling of sulfur resources.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.